mail slot
Worth a lookShows no brand lock-in (top 5 brands take 40% of clicks), but high returns (7.8%) keeps it on the watch list.
Brand share
Incredible40%top-5 brand share — no brand owns this niche
Avg price
Incredible$36.08avg listing price — sweet spot $15–$100
Review moat
Great124.71avg incumbent reviews — the moat a new listing must climb
Price range
Great$7.90–$89.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great31%top-5 click share — an open shelf
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Market size
Okay$102K$102K/yr · 130K searches
Growth
Bad-1.9%90-day search growth — must beat 0% to launch
Returns
Bad7.8%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, mail slot is a $102K/yr Amazon United States market (130K searches/yr). The top 5 brands hold 40% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
mail slot market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $90K–$108K
- units × avg price
- Conversion rate
- 2.2%
- Avg BSR
- #37
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 79%
- Out of stock
- 2.0%
- Avg brand age
- 54 months
- Avg seller age
- 171 days
Competition & brand share
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.Brands
32 rising
Sellers
65
Top-5 brand share
40%
Top 20: 89%
Top-5 click share
31%
Top 20: 70%
Open market
55%
- khtumeware16%
- Ausolous8%
- YORNIALA5%
- NUK3Y PRODUCTS K35%
- Plugsharge5%
- Profasion5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top mail slot search terms
- mail slot33K/yr
- mail slot for door12K/yr
- mail slot cover20K/yr
- door mail slot14K/yr
- mail slots for walls8K/yr
- mailbox slot5K/yr
- door mail slots6K/yr
- mail slot cover plate5K/yr
- brass mail slot4K/yr
- wall mail slot4K/yr
Top mail slot products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
khtumeware Matte Black 13 inch 1-Pack Solid Brass Mail Slot with Solid Brass Internal Frame is Well Made Door Mail Slots
khtumeware$30.734.6★146 rev
Ausolous Mail Slot for Door 133.6 Heavy-Duty Iron Door Mail Slot with Pre-Drilled Holes & 8 Screws Included Matte Black Mail Slot for Front Door or Wall Easy DIY Install
Ausolous$19.754.5★26 rev
Plugsharge Door Drop Box Mail Slots for Mail Rent Deposit and Night Key Through-the-Door Prevents Money Fishing Locking Steel Mailbox with Rear Access Black
Plugsharge$64.574.4★117 rev
YORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening
YORNIALA$20.113.9★7 rev
ZAUYX 1 Pack 13inch Matte Black Solid Brass Heavy Duty Mail Slot with Solid Brass Heavy Duty Inner Frame for Use in Slots for Doors
ZAUYX$29.584.2★28 rev
Newest
by launch dateYORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening
YORNIALA$20.117 rev
Mail Slot Matte Black 13Inch Stainless Steel Mail Slot Cover for Front Door.Mailbox Door Replacement for Wall 133.7 (Gold 10Inch)
Toyvarnix$31.5417 rev
Abeicy 1 Pack 13inch Mail Slot Stainless Steel Mail Slot Cover for Front Door to Keep Mails Intact Black
Abeicy$21.0112 rev
Qlvily 13-Inch Stainless Steel Mail Slot for Front Door Includes Cover & Mounting Screws Black (13 x 3.7) 1 Pack
Qlvily$22.3320 rev
1 Pack Mail Slot 13 inch Upgrade Well Made Stainless Steel Door Mail Slots for Front Door Matte Black
Aiwaiufu$20.4911 rev
Trending
90-day click momentumYORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening
YORNIALA$20.113.9★
Mail Slot Matte Black 13Inch Stainless Steel Mail Slot Cover for Front Door.Mailbox Door Replacement for Wall 133.7 (Gold 10Inch)
Toyvarnix$31.544.4★
Ausolous Mail Slot for Door 133.6 Heavy-Duty Iron Door Mail Slot with Pre-Drilled Holes & 8 Screws Included Matte Black Mail Slot for Front Door or Wall Easy DIY Install
Ausolous$19.754.5★
Vintage Brass LETTERS Mail Slot Antique Cast Brass Letter Plate for Front Door Heavy-Duty Mailbox Door Slot Cover Rustic Classic Design for Home Entryway & Office (30x10 cm)
Plaque$81.380.0★
Qlvily 13-Inch Stainless Steel Mail Slot for Front Door Includes Cover & Mounting Screws Black (13 x 3.7) 1 Pack
Qlvily$22.334.7★
What buyers say about mail slot
What buyers praise and complain about, mined from review topics.What buyers love
“Easiest installation”
“Interesting product”
“Exact Fit”
“very well built”
“Once installed, it is easy to use”
“It is sturdy”
“Worked as described”
“Good price”
“Nice looking mailbox very easy to install I did change the key lock for a thumb twist lock I wish that came as an option for this”
“Very durable”
What buyers complain about
“Slot is too short”
“Poorly designed”
“Finish is not durable”
“didnt close smoothly on its own”
“The original adhesive did not hold”
“Feels more decorative than high quality”
“And the lid is not functional”
“That said, the overall look and material feel pretty cheap”
“there isn't any seal”
“Not worth the price”
Top return reasons
Common questions
- Is mail slot profitable to sell on Amazon United States?
- The niche generates $102K/yr across 56 tracked products. 2 of 16 products launched in the last 360 days are still selling. 90-day search growth is -1.9%. Flapen's verdict: Worth a look (55/100).
- How competitive is the mail slot niche?
- 32 brands and 65 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 40% of demand.
- What do buyers complain about in mail slot?
- Top complaints mined from reviews: Size-Overall, Design-Overall, Durability. The return rate is 7.8% — above our launch gate.
- When does demand for mail slot peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the mail slot niche?
- Listings span $7.90–$89.93; the average listing price is $36.08 (sweet spot $15–$100). The average incumbent carries 125 reviews — the moat a new listing must climb.